The utility model relates to a balanced telescopic machanism, it includes the mount that the side direction set up, is equipped with first fixed ear, the fixed ear of second and the fixed ear of thirdin the vertical direction of mount side in proper order respectively, and the fixed ear of first fixed ear and third links to each other through the one end of bearing frame with first yoke and second yoke respectively, and the other end of first yoke and second yoke links to each other with the wheel arm through the bearing frame respectively, and the subaerial one end of wheel arm rest is equipped with the wheel, it is continuous with the one end of vertical transmission arm that first yoke passes through the bearing frame, and the other end of vertical transmission arm links to each otherwith steering block's turn end, and steering block's one end and the fixed ear of second link to each other, and steering block's the other end is continuous with the one end of horizontal transmission arm, and the other end of horizontal transmission arm links to each other with drive unit. It is continuous with horizontal transmission arm and vertical transmission arm through steering block, become the vertical up -and -down motion of wheel into horizontally transverse movement, become fore -and -aft power transversely, can become sharp driving motor and transversely place for whole balancecar compact structure. The utility model also discloses a balance car of containing be somebody's turn to do balanced telescopic machanism.